Paper-box-blank machine.



J. R. VAN WORMER. PAPER BOX BLANK MACHINE.

APPLIOATION I'ILBD JAN. 23, 1909.

939,571 Patented Nov. 9, 1909.

2 SHEETS-SHEET 1.

WITNESSES. N} awz W W J. R. VAN WORMER.

PAPER BOX BLANK MACHINE.

APPLICATION FILED JAN, 23, 1909.

939,571 a Patented Nov. 9, 1909.

2 SHEETS-SHEBT 2.

WITNESSES.

JOHN VAN WORMER, OF TOLEDO, OHIO.

PAPER-BOX-BLANK. MACHTNE.

Specification of Letters Patent.

Patented Nov. 9, 1909..

Application filed January 28, 1909. Serial 110 473,849.

To all whom it may concern: 7

Be it known that I, JOHN R; VAN Wounnn, a citizen of the United States, residing at Toledo, in the county of Lucas and State of Ohio, have invented certain new and useful Improvements in PaperlioX-Blank Machines, and 'do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertaius to makeund use the same, reference being had to the accompanying drawings, and to the figures of reference marked thereon, which form a part of this specification. In the manufacture of blanks for paper or pasteboard boxes, it is desirable to form such blanks from rolls of paper or pasteboard instead of from separate sheets, A serious difliculty encountered in the forming of such blanks from continuous rolls is that the rolls are extremely heavy, and, as a consequence, when'the rolls are set to revolving, the momentum is so great that the heavy paper 01' pasteboard is caused to buckle and break during the pause of the material while the cutting and creasing .of theblank takes place. This difficultyhas been so great as to prevent the satisfactory use of heavy paper or pasteboard when it is fed directly from rolls to the blank-cutting machinery.

My invention relates to and its object is to provide a machine for overcoming the difiiculties here indicated, and, more particularly, to furnish devices by means of which the material for box-blanks may be fed directly from a roll to the blank-cutting mechanism' of my machine, and in which the feed-rolls and the paper-roll shall be caused to pause during the action of cutting and creasing dies, thus keeping the stock straight and unbroken and preventing waste of material. A further object of my invention is to provide means for automatically-stopping the machine in case the web of paper should become buckled or formed into folds, as it is fed between theplaten and the die of the machine.

I attain these objects by means of the devices mechanism and arrangement of parts hereinafter shown and described, and illustrated in the accompanying drawings, in wh1ch,f

l'lgure l is a side elevation of the front moved, and Fig. 4 a side elevation of the same, taken-on line mw Fig. 3. Like parts are represented by corresponding numerals throughout the drawings.

1 In the drawings, 1 is a stout frame, supporting a table bed or platen 2, and forming a housing in which the carrier for the cutting and creasingdie 3 reciprocates vertically, The frame or housing 1 also forms bearings for the drive-shaft 4 and for the train of gears 5,6, 7, 8 and 9. The shaft 8, upon-which the gear 8 is secured, extends through the frame of the machine and carries at each end a crank. At opposite sides of the machine are pitmen 10 connected at their lower ends to crank-pins 11 carried by the shaft 8*, and 'at their upper ends connected to wrist-pins 12 upon the reciprocating die carrier 3.

Rigidly secured upon the gear 9 and radially thereof-is a box or housing 13 in which is journaled a screw 14, operatively engaged with the radially movable crankpin 15; Pivotally connected with the crank pin 15 is a connecting rod or bar 16 pivotally connected, as at 17 with rack-bar-lS. The rack-bar reciprocates in suitable uides and its teeth engage the teeth of a pinion 19 on shaft 20 journaled in the frame of the machine and which carries a feed-roll 21. Directly above the feed-roll 21 is a pressure! roll 22 journaled in the frame of the machine. Between these two rolls the web or strip of paper 23, to be operated upon, is fed. The pinion 19 engages shaft 20 by means of a pawl-and-ratchet, (not shown in the drawings), or other equivalent devices, by means of which the feed-roll 21 is caused to revolve only with the downward movement of the rack-bar 18.

For the feed-roll 21, I providea brakeshoe 24 mounted upon or rigidly connected with one end of a lever 25, fulcrumed, as at 26, upon the frame of the machine, the other end of the lever being inclined, as at 27, into the path of a pin 28 secured to and projecting outwardly from the rack-bar 18. Asthe rack-bar nears the end of its downward movement, the pin 28 engages the lever,

causing the lever to swing slightly and to of paper or pasteboard is fed to the dies or hem cutting mechanism. The upper forward end of the frame 29 is inclined and notched, as at 32 to form bearings for the ends of the shaft ofthe guide-roll 33 Ri idly secured to one end of the shaft 30 is a riction disk 34. 35 is a two-part friction-clutch which embraces the friction-wheel 34. The two parts of the friction-clutch are pivoted at one side upon the bracket or frame 29, as at 36. At their other side the two parts of the clutch 35 are provided with opposed lugs or ears 37.

These lugs or ears are tapped for the reception of a screw 38, the thread of the screw of quick lead. The screw 38 is provlded with an arm -or handle 39 through which passes loosely a rod 40. Upon the rod 40, at opposite sides of the arm 39, are adjustable stops 41, which alternately engage the arm 39 as the rod 40 is caused to move to and fro. The other or forward end of the rod 40 is pivotally connected with the adjustable crank-pin 15, as at 42.'

The operation of my machine,- thus far described, is as follows :'-The parts being assembled, as illustrated and explained; the die-carrier being provided with the proper cutting and creasing dies 3; a paper roll being mounted upon its shaft 30, as above described; thepaper-web 23 being threaded over the roll 33 and between the rolls 2122 and between the die and platen; the crankpin 15 being radially adjusted upon the gear 9 to give exactly the required movement to the crank-bar 18 and the feed-roll 21 and to insure the feed of the proper'amount of paper to the cutting mechanism, motion is communicated to'the shaft 4and thence to the other moving parts, as will be now understood. As the rackbar moves downwardly, the feed-roll 21 is caused to revolve quickly, pulling from the paper roll 31 the requisite amount of paper and feeding it beneath the die. As the feed-roll and paper roll revolve quite rapidly, they acquire considerable momentum, and, unless stopped at the-instant the proper amount of paper is fed to the die, a large amount of surplus paper would be fed from the aper roll, and the paper beneath the die wou d not lie smooth and flat. This difiiculty is avoided, as will be seenyby the pin- 28 moving along the arm 27 of the brake, 24, which sets the brake against the feed-roll. At the same time the movement of the rod 40 gives a part turn to the screw 38, which causes the clamp ing members of the clutch 35 to tightly clamp the friction disk 34 on the shaft of the paper roll, thus also bringing this roll to a gradual but quick stop in its rotation.

It will be seen that when large blanks are to be cut, or when several smaller blanks are to be cut simultaneously, it may be necessary to feed to the cutting mechanism a considerable amount of paper or stock at each throw of the cutting die. This may be gaged and controlled exactly by the adjustment of the crank-pin 15 on the gear 9, for, as will be obvious, if the crank-pin is set exactly at the center of the gear 9 there will be no movement at all of the rack-bar 18 or the feed-roll 21, but if the crank-pin be moved to its outer limit, the forward rotation of the feed-roll will be rapid and sufficient to feed a considerable amount of paper to the cutting mechanism at each throw of the rack-bar. It will also be seen that the more rapid the feed of the paper between the successive cuts of the dies, the greater will be the momentum of the feedroll and the paper roll to be overcome, so that it will be necessary to set the brakes upon. thefeed-roll and the paper roll with considerably more force than if these rolls were moved but a short distance between cuts. The increased throw of the rods 11; and 40 provide automatically for the required increase of brake reslstance, for it will be seen that the greater the throw of these two rods, the more tightly will the brakes be set at each rotation of the wheel 9. The two brakes 24 and 35, it will be understood, have suflicient resiliency to ermit the variation of strain here indicated.

lVhile my machine is designed to auto matically perform its work and to use up the roll of material with which it may be supplied, it sometimes happens that, owing to flaws or breaks or tears or weak spots in the aper, it is not fed forward from the feed-r0 ls to the proper point beneath the die. When this happens, the paper begins to buckle and double and forms irregular folds, which might, unless attended to, impose unduestrams upon the machine with disastrous results. This contingency is obviated by the mechanism now to be described.

In Figs. 3 and 4 are shown a starting and stopping handle 43, which throws a belt to and from fast and loose pulleys or controls equivalent stoppin and starting devices. This handle is hed normally in stopped position by spring 44. 45 is a stop-bar or latch, beveled on its lower end, movin verticallyin housing 46 and held normal y de- The lower beveled pressed by spring 47. end of the ar 45 is in the horizontal path of the lever 43., Then this lever is swung into starting position, it strikes the beveled platen and the die-ca.rrier, means for actulower end of the sto 45, lifting the stop which, immediatelyalls behind the lever when it has reached the starting position, and so holds the startinglever until the stop is again lifted. The upper end of the stopbar has, as at 48, a hook which engages one arm of a bell-crank lever 49, fulcrumed, as at 50, upon a rod 51 which extends to within convenient reach of the operator,

and which is, at its outer extremity,- formed as a crank, as at 52. The other arm of the bell-crank lever 49 is connected by a wire 53 with one arm of a bell-crank lever 54 rigidly securedupon a rod or shaft 55 journaled in the frame of the machine directly. beneath the bed-plate or platen 2 near its forward margin. The other arm 56 of the lever projects beyond the forward margin of the bed-plate 2 close to the point where the feed-rolls deliver the paper onto the bedplate or platen as illustrated in Fig. 4.

The rod orshai t. 55 extendsentirely across the machine and is supplied at intervals with a number of the arms or fingers 56.

Should the aper, as. it leaves the feedrolls,'fail to eed forward upon the bed:

into stopped position and the machine is stopped withoutinjury to any of .the parts. Since the rod 51 terminates in the crank 52, it will be seen that the machine may be manually stopped by giving the crank a part turn, thus pulling the stop-bar out of en: gagement with the starting lever, as above described. 1

Having described my invention, what I claim and desire to secure by Letters Patent is 1. In a machine of the described character, a co-acting platen and reciprocating diecarrier, means. for revolubly supporting a paper roll, a feed-roll adapted to feed the paper from such paper roll between the platen and the die-carrier, means 'for actuating. the feedq oll between the working strokes of the die-carrier, a brake-mechanism for the feed roll, a brake-mechanism for the paperroll support, and means for actuating said two brake-mechanisms inharmony with the movement of the die-carrier.

paper roll, a feed-roll adapted to feed the paper from such paper roll between the ating the feed-roll between the working strokes'of the die-carrier, a brake-mechanism for the feed-roll, a brake-mechanism for .the paper roll support, means for actuating said two brake-m chanisms in harmony with the movement of the die-carrier, and means for varying the rotations of the feed-roll independently of the movement of the diecarrier.

3. In a machine of the described character, a co-acting platen and reciprocating diecarrier, means for revolubly supporting a paper roll, a feed-roll adapted to feed the paper from such paper roll between the platen and the die-carrier, means for actuating the feed-roll between the working strokes of the die-carrier, a brake-mechanism for the feed-roll, a brake-mechanism for the paper roll support, means for actuating said two brake-mechanisms in harmony with the movement of the die-carrier, and means for varying the rotations of the feed-roll independently of the movement of the diecarrier, and for correspondingly varying the stress of the brake mechan'isms.

4. In "a machine of the described character, a blank-cutting mechanism, means for.

revolubly supporting a paper roll, a feedroll adapted to feed the paper from such paper roll to said cutting mechanism, a. radially adjustable crank, driving connections between the crank and the feed-roll, a brake for the paper roll supportand connections between the crank and said brake.

5. In a machine of the described character, a blank-cutting mechanism, means for revolubly supporting a paper roll, a feedroll adapted to feed the paper from such paper roll to said cutting mechanism, a radially adjustable crank, driving connections between the-crank and the feed-roll, a brake for the paper roll support. a. brake for the feed-roll and connections between the crank adapted to feed paper to such mechanism, a

stopping mechanism for the machine, a. detent for holding the stopping mechanism in inoperative position, a series of fingers pivotally supported parallel with and near to r the path of such paper, and connections between the fingers and the detent.

7. A machine for forming box-blanks,

comprising a coiiperating platen and diecarrier, a. .train of gears operatively connected with the die-carrier. means for revolubly supporting a paper roll in operative relation to the die-carrier and platen. a feedroll'adapted to feed paper from such paper rollto the die-carrier and platen, a radially adjustable crank upon one of the gears of said train, a pinion upon the shaft of the feed-roll," a rack connected with said crank roll, a brake for the paper roll carrier, and

and with said pinion, a brake for the feed- I and said stopping" mechanism, substantially as described. 10 connections whereby the brakes are actuated In testimony whereof I aflix my signature in harmony with the movement of the crank, in presence of two witnesses.

combined with a series of fingers pivotally JOHN R. VAN VVORMER. dis osed near to the discharge side of the Witnesses: fee -roll, a stopping mechanism for the ma- WM. C. BINNs,

chine, and connections between said fingers LEONA Kmnmz. 

